2 12 x 5 12 July 8, 2019 16 32 64 128 2 1 12 x 1 5 12 3 12 x 2 5 12 12 x 12 x 5 1 2 box 24x 12 x 2 )+ 12 x 5 )= 540 2 x 2 5 2 5×12 2 5 x 12